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• Piwik IRC Meetup on Tuesday

  10 février 2014, par Fabian Becker — Community, Development

  With the release of Piwik 2.0 and the Piwik Marketplace we are focusing on the community aspect of Piwik Development. In order to give users and developers a chance to get involved in Piwik we decided to have IRC meetups every two weeks, where we discuss current and future plans of Piwik development.

  Why should I join ?

  This is the chance for everyone to directly talk to developers and discuss issues and feature ideas. It is also good if you want to get involved in development and pick up smaller features to get to know the code base.

  Next Piwik meetup

  • Date : Tuesday February 11th, 7.30pm UTC
  • Duration : 30min
  • IRC #piwik channel (irc.freenode.net)

  Topics are :

  • 2.1 release (closed tickets)
  • open tickets for Piwik 2.2

  To join the chat, you can use the website : http://webchat.freenode.net/ (or join with your IRC client of choice) – See also what will be the time in your country at 7.30pm UTC. You will find us in the Freenode channel #piwik.

• Why does ffplay read both video and keyboard input from stdin ?

  27 janvier 2016, par cxrodgers

  I’m trying to compress a video feed from a webcam while simultaneously displaying it, using ffmpeg and ffplay. I do actually have this working, but I want to disable the ffplay window from interpreting keyboard presses.

  It took me a while to figure this out but here’s what I’m using :

  ffmpeg -f video4linux2 -i /dev/video0 -vcodec mpeg4 -f rawvideo - \
  
    | tee output.mkv \
  
    | ffplay -fflags nobuffer -

  (Actually I am doing all of this from a Python script using the subprocess module. Here I have represented it as a straightforward terminal command because the result is the same.)

  So this actually works and does everything I want. The only thing is that if the ffplay window is active, it interprets keypresses (like "F" for fullscreen). Instead I want it to completely ignore all keypresses.

  My questions :

  1. How is this even possible ? I thought I was redirecting video input to stdin, and then telling ffplay to read video from stdin. How can keypresses be multiplexed on the same pipe ?
  2. How can I disable this behavior ? I tried "-nostdin" but it doesn’t work with my version.

  # ffplay -nostdin output.mkv

  ffplay version N-77455-g4707497 Copyright
  (c) 2003-2015 the FFmpeg developers built with gcc 4.8 (Ubuntu
  4.8.4-2ubuntu1 14.04)

  ...

  Failed to set value ’output.mkv’ for option ’nostdin’ : Option not
  found

• avformat/mpegtsenc : do not include adaptation field in teletext TS packets

  21 octobre 2021, par Alex Shumsky

  avformat/mpegtsenc : do not include adaptation field in teletext TS packets
  From ETSI EN 300 472 V1.3.1 (2003-05) Specification for conveying ITU-R System
  
  B Teletext in DVB bitstreams :
  4.1 Transport Stream (TS) packet format
  
  The standard TS packet syntax and semantics are followed, noting the following
  
  constraint :
  
   adaptation_field_control only the values "01" and "10" are permitted.
  Some set top boxes (Motorola, Arris, Zyxel) refuse non-conforming packets.
  Signed-off-by : Alex Shumsky <alexthreed@gmail.com>
  
  Signed-off-by : Marton Balint <cus@passwd.hu>
  

  • [DH] libavformat/mpegtsenc.c